L'astrophysicien Georges Michaud est un spécialiste de la physique des étoiles. Il étudie l'interaction entre les vents de surface et les abondances des éléments chimiques sur les étoiles. Ces abondances servent de sonde pour explorer vents et turbulences, c'est-à-dire l'hydrodynamique des étoiles, une des branches les moins connues de l'astrophysique. Les travaux du professeur Michaud permettent de mieux comprendre I'histoire et l'évolution des étoiles et de formuler des hypothèses plus précises relativement à la naissance et à la composition de notre galaxie et de l'univers.

Gerard Middleton's rise from Lecturer when he came to McMaster University in 1955 to Professor in 1967 is indicative of his productivity in research while carrying at times a more-than-reasonable teaching load. An administrative load as Chairman of the Geology Department was also successfully undertaken during this period, as well as a leave-of-absence at the California Institute of Technology. His interests in ancient sedimentary rocks have led him into the problems of interpreting natural systems and thence into multivariate statistical methods, whose use in Canadian Geology he greatly stimulated. He was also led into the mechanics of accumulation of modern unconsolidated sediments, in which field his fertile experimental methods are now producing valuable results. His general approach may be described as the application of quantitative methods and mathematical sciences in geology. Such a programme is relatively new on the Canadian scene, but has earned him international acclaim, in Europe as well as North America, and a seat on the Council of the International Association of Sedimentologists. As a scientist of broad interests, as an experienced Canadian educator and (to his friends) as a renowned controversialist, he is eminently qualified for election to the R.S.C.

Miller obtained his B.Sc. ('60, Alberta), M.Sc. ('61, Alberta) and Ph.D. ('66, Caltech) in physics but as a postdoc at the Ontario Cancer Institute (on staff since 1967) switched to cell biology. Early work focussed on developing physical methods for the analysis and separation of cells (most successfully the "Staput" method, a Science Citation 'classic') and applying these to studies of the immune system in mouse and man. More recently he introduced (Nature, 1980) and provided evidence for the concept of a veto cell, a cell which can inactivate a T cell that recognizes it. He is presently studying how veto cells can be used to establish transplantation tolerance without using immunosuppression. He has more than 170 publications and has given more than 150 invited talks outside Ontario. At University of Toronto, Miller became Professor in 1976, was founding Chair of Immunology (1984-90) and is now (1992-) Chair of Medical Biophysics. He has served on more than a dozen provincial and national grants panels and advisory committees (MRC, NCI, Arthritis Society etc.). He is currently President of the Canadian Society for Immunology. Thus, in addition to having acquired an interested reputation for his scientific achievements, he has contributed significantly to the education and scientific development of immunology in Canada.

Dr. Larry Milligan has made extensive contributions to the understanding of the metabolic physiology of ruminant animals, particularly cattle and sheep. His research has helped elucidate pathways of digestion and synthesis of compounds in the rumen (one of the four chambers in the stomach of cattle). Of major importance he has clarified how rumen microbes utilize ammonia for protein synthesis, and the physiological controls for the recycling of blood urea to the rumen for subsequent conversion to ammonia and use by the microbes. Using his basic research as the foundation, Dr. Milligan has been a leader in developing practical techniques for development and evaluation of feedstuffs for ruminants.

Her work on specific psychological effects following injury to local parts of the brain is known internationally. Most widely cited is her study of memory following injury to the structure known as the hippocampus, when the patient can form no new memories though retaining old ones. She and her students elucidated the true role of the frontal region of the brain, previously not understood. She first showed the importance of the right side of the brain for pattern perception, and is a ranking authority on the relations between left and right side with respect to speech and handedness.

Robert M. Miura, Professor of Mathematics at the University of British Columbia, is a distinguished applied mathematician who has made notable contributions to the theory of nonlinear wave propagation, mathematical physiology and singular perturbation theory. In the 1960s and early 1970s, Dr. Miura was a major player in a team which developed the now classical 'inverse scattering method' for finding exact solutions to nonlinear dispersive wave equations. In the 1970s and 1980s Dr. Miura, in working with many biologists, contributed substantially to our theoretical understanding of neurophysiology, cell membrane behaviour, and heart beat properties. Finally, in recent work with Charles Lange, from the University of California Los Angeles, Dr. Miura has developed a wide variety of perturbation methods to solve singular differential-difference equations, which have potential applications in many areas of engineering.

During the past 15 years Dr. Moens has published 40 papers relating to chromosomes and their behaviour during cell division. In choosing to study those organisms best suited to experimental research he has carried out research with plants (Lilium, Lycopersican, Rhoes), animals (Rattus), insects (Culex, Neodiprion. Locusta, Charthippus), fungi (Saccaromyces), and protists. The excellence of these studies, and especially of his electron-microscope analyses of synaptinemal complexes, is widely recognized. During the past five years he has been invited to lectures on more than 20 occasions at other Institutions in Canada, the U.S.A., Denmark and Holland.

All of Moody's work has its origin in his thesis (1966) which has turned out to be of great interest. Moody, and, independently Kac in the USSR, introduced what is now referred to as the Kac-Moody Lie algebras. The Kac-Moody Lie algebras first Attracted widespread attention after Macdonald's discovery of a general class of identities generalizing classical ones of Jacobi expressing theta-functions as infinite products. Although Macdonald was aware, and said so, that his identities were also in some sense a generalization of polynomial identities of Weyl appearing in the study of finite-dimensional Lie groups or algebras, it was Moody and Kac who realized that they could be directly expressed as an extension of Weyl's formula to the Kac-Moody Lie algebras. Since then, several people have used this tool to interpret and generalize classical identities in the study of partitions.

Cathleen S. Morawetz is one of the world's greatest applied mathematicians. Born and reared in Canada, she has never forgotten her Canadian roots and is still contributing to mathematics in Canada. She has proved deep theorems about partial differential equations, which have significant applications in aerodynamics, acoustics and optics. Her work is important for problems involving shock waves, and she is a leading authority on problems of transonic flow and scattering theory for wave equations. She has received two Guggenheim fellowships and seven honorary degrees from prestigious universities, and is a fellow of the American Academy of Arts and Sciences and a member of the U.S. National Academy of Sciences.

L. W. Morley, Ph.D., Chief, Geophysics Division, Geological Survey of Canada, has exercised a double influence. In operating an efficient organization for airborne magnetometer, electromagnetic, and radiometric surveys, for seismic surveys, and for studies in palaeomagnetism and radio-activity he has provided a service of great value to geologists and prospectors. By his inspiration he has led geologists, both within and outside the survey, to an appreciation of what geophysics can do to help their work and enlarge their vision. In 1963, propounded the theory of the magnetic imprinting of the ocean basins which was fundamental to the later theory of Plate Tectonics. Instrumental in organizing remote sensing in Canada and became the founding Director-general of the The Canada Centre for Remote Sensing (1971). Founding Director of the Institute for Space and Terrestrial Science, York, Waterloo and Western Universities which was one of the 7 centres of Excellence funded by the Ontario Government (1987-90).

Most of Morrish's early work dealt with various processes involving gamma and cosmic rays, and has stood well the test of time. Since 1953 he has investigated with various co-workers the properties of ordered systems. Techniques employed include magnetic resonance, neutron diffraction Moss bauer effect, domain patterns, low temperatures, and high pulsed fields. He has been involved in materials manufacture including single crystals, sintered ceramics, and thin films, and has contributed to studies of single-domain particles, standing spin waves, canted anti-ferromagnets spinels and garnets. He is co-author of the Brown-Morrish theorem frequently used in magnetostatics. His book, "The Physical Principles of Magnetism" which provides comprehensive and unified treatment of the subject has received excellent reviews.